Every paycheck that includes overtime seems to disappear faster than a normal one. You worked extra hours, but the after-tax amount doesn't match the effort. The common explanation is that overtime “gets taxed more.” It doesn't. The US tax code treats overtime dollars exactly like any other income — but the way employers withhold can make it look heavier than it actually is.
The Marginal Bracket System
Federal income tax is marginal: different slices of your income are taxed at different rates, and a higher bracket only applies to the dollars that cross the threshold — not to everything you earned. If you're a single filer earning $52,000 in regular wages and you work $4,000 in overtime, only the portion of that $4,000 that lands above $48,475 faces the 22% rate. Everything below that line is still taxed at 12%.
The bracket you're in describes your rate on the next dollar earned, not on your entire paycheck. Earning overtime may push a few hundred dollars into a higher bracket, but it cannot retroactively increase the tax on income you already earned.
Why Your Overtime Check Looks Lighter
There are two common reasons the withholding on an overtime check feels punishing:
- Annualized withholding:Many payroll systems multiply a single pay period's gross by 52 (or 26 for bi-weekly) to estimate your annual income, then compute withholding based on that annualized figure. One large paycheck — regular wages plus overtime — inflates the projection and pushes the withholding into a higher bracket for that period only.
- Flat supplemental rate:Some employers use the IRS's optional 22% flat withholding rate for supplemental wages (which overtime qualifies as). That 22% is just a withholding convenience — not your actual rate. If your effective federal rate is 14%, you'll get that difference back at tax time.
Either way, the extra withholding is temporary. Your actual tax bill is determined when you file your return, not by what your employer deducted each pay period.
A Worked Example
Say you're a single filer with a $58,000 base salary, and you earn $6,000 in overtime during the year. Here's how that plays out under the 2025 brackets:
Base salary: $58,000
Overtime pay: + $6,000
Total gross income: $64,000
Standard deduction (2025): -$15,000
Taxable income: $49,000
Tax owed:
10% on first $11,925 = $1,193
12% on $11,926–$48,475 = $4,386
22% on $48,476–$49,000 = $115
Total federal tax: $5,694
Effective rate: 5,694 / 64,000 ≈ 8.9%The overtime pushed $525 into the 22% bracket — costing an extra $115 in tax compared to if that money were taxed at 12%. That's the real “overtime tax penalty”: $115 on $6,000 of extra earnings. The rest is just withholding that gets reconciled at filing. To see exactly how overtime affects your own take-home, run the numbers through the overtime tax calculator with your actual rate, filing status, and pay period.
2025 Federal Income Tax Brackets — Single Filers
| Taxable income | Rate | Tax on this bracket |
|---|---|---|
| $0 – $11,925 | 10% | Up to $1,193 |
| $11,926 – $48,475 | 12% | Up to $4,386 |
| $48,476 – $103,350 | 22% | Up to $12,085 |
| $103,351 – $197,300 | 24% | Up to $22,579 |
| $197,301 – $250,525 | 32% | Up to $17,017 |
| $250,526 – $626,350 | 35% | Up to $131,652 |
| Over $626,350 | 37% | On every dollar above |
Married filing jointly brackets are roughly double the single thresholds through the 24% bracket. FICA taxes (Social Security at 6.2% and Medicare at 1.45%) apply to overtime wages the same as regular wages — there's no separate overtime rate for those either.
Common Mistakes and What to Do About Them
- Assuming you should avoid overtime near a bracket cutoff.You can't “keep yourself out of a bracket” in a meaningful way — the tax only applies to the dollars over the line, so an extra $500 in earnings above a threshold costs you at most $110 more in federal tax (at 22%).
- Confusing withholding with actual tax.A large deduction in one period doesn't mean you owe that amount. Adjust your W-4 allowances if systematic over-withholding is tying up cash you could use through the year.
- Forgetting state income tax. Most states with an income tax apply it to overtime wages at the same rates as regular wages. A few states (like California) have their own supplemental withholding rules.
Overtime pay is one of the few situations where the math genuinely surprises people — not because the tax code treats it differently, but because withholding mechanics make it appear that way. The underlying rule is simple: more income means more tax, calculated on the margin, and reconciled at filing.